looking for a linux based server router?

i have an old router but im not happy with the speed, im looking to replace it with another server like a linux server with 2 WANS and 1 Lan that also has firewall, antispam and features like a good router.

http://www.pfsense.org/
is a very good choice. You can use it installed on hard drive or as a live cd (ideally to test) or even with a virtual machine. From the oficial web you can download the VMware Appliance ready to use; or you can install / boot live cd from another plattform like virtualbox